Integrated electrocoagulation-flotation of microalgae to produce Mg-laden microalgal biochar for seeding struvite crystallization.

ABSTRACT: Developing sustainable materials for recovering and recycling nutrients from wastewater is critically needed for nutrients such as phosphorus that have a diminishing supply. Struvite crystallization is emerging as a promising strategy for phosphorus recovery which can be enhanced with seeding through microalgal biochar. The main bottleneck of using microalgae is its high harvesting cost. In this study, an integrated electrocoagulation-flotation (ECF) process is used to recover and at the same time modify the algal surface with magnesium anode and inert carbon cathode. Harvesting efficiency of 98% was achieved with 40.78 mA cm^-2, 0.5 cm inter-electrode distance and energy consumption of 4.03 kWh kg^-1 in 15 min. The harvested microalgae were pyrolyzed to obtain a yield

SUBMITTER: Nageshwari K 

PROVIDER: S-EPMC9259614 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature